Madison Avenue Partners, LP — Quarter-over-Quarter 13F Allocation Shifts Q1 2026
In Q1 2026, Madison Avenue Partners, LP initiated 7 new positions, increased allocation to 3 existing positions, trimmed 10 positions, and exited 3 positions entirely. The fund's 13F equity book declined from $2.33B to $2.30B (-1.2% QoQ) . All deltas are sourced from sequential SEC Form 13F-HR filings; share-count changes reflect explicit trading activity, while weight changes can also include price movement. This page lists every position change reported — the portfolio overview shows a summary of the top shifts.
Net Portfolio Value Change
- $2.33BPrior quarter
- $2.30BCurrent quarter
- $-0.03BNet delta
- -1.2%% change
New Position Initiations Q1 2026
Securities disclosed for the first time in Q1 2026 that were not present in the prior 13F-HR filing.
| Company | Ticker | Initial Allocation Weight | History |
|---|---|---|---|
| COUPANG INC | CPNG | 7.69% | History → |
| ICON PLC (ICLR) | ICLR | 6.17% | History → |
| APARTMENT INVT & MGMT CO | AIV | 2.19% | Holders → |
| STAAR SURGICAL CO | STAA | 1.99% | Holders → |
| PRIMO BRANDS CORPORATION | PRMB | 1.08% | Holders → |
| DNOW INC | DNOW | 0.71% | Holders → |
| PAR TECHNOLOGY CORP | PAR | 0.26% | Holders → |
Largest Allocation Increases Q1 2026
Largest portfolio-weight increases in existing positions. Share-count delta is shown separately so price-only re-weighting can be distinguished from active adds.
| Company | Ticker | Δ Weight | Δ Shares | History |
|---|---|---|---|---|
| MAGNUM ICE CREAM CO NV | MICC | +3.06% | +78.02% | History → |
| SINCLAIR INC | SBGI | +0.23% | +61.98% | Holders → |
| GALAPAGOS NV | GLPG | +0.11% | +11.39% | Holders → |
Largest Allocation Reductions Q1 2026
Largest portfolio-weight decreases in existing positions (positions kept open at a lower allocation).
| Company | Ticker | Δ Weight | Δ Shares | History |
|---|---|---|---|---|
| GLOBUS MEDICAL INC | GMED | -7.16% | -72.66% | Holders → |
| SANDISK CORP/DE | SNDK | 2.48% | -56.84% | History → |
| CENTRAL BANCOMPANY | CBC | -0.57% | -55.23% | Holders → |
| FRANKLIN STR PPTYS CORP | FSP | -0.06% | -52.07% | Holders → |
| WILEY JOHN & SONS INC | WLY | -0.39% | -40.87% | Holders → |
| INDIVIOR PHARMACEUTICALS INC | INDV | -3.96% | -31.29% | History → |
| KEROS THERAPEUTICS INC | KROS | -0.42% | -23.93% | Holders → |
| MAGNERA CORP | MAGN | -0.50% | -10.67% | Holders → |
| BRITISH AMERN TOB PLC | BTI | -0.12% | -8.17% | Holders → |
| SOLVENTUM CORP | SOLV | -1.44% | -5.65% | History → |
Exited Positions Q1 2026
Positions present in the prior 13F-HR filing that no longer appear in Q1 2026.
| Company | Ticker | Last-Reported Portfolio Weight |
|---|---|---|
| SOLSTICE ADVANCED MATLS INC | SOLS | 5.81% |
| UNIFIRST CORP | UNF | 2.52% |
| WORKIVA INC | WK | 0.22% |
Methodology & FAQ
How Madison Avenue Partners, LP Quarterly Changes Are Computed
Each row above is computed by joining the most recent 13F-HR filing for Madison Avenue Partners, LP against the immediately preceding quarterly filing for the same fund. Portfolio weights are normalized to exclude listed options for comparability. A complete description of the methodology — including how confidential treatment filings are handled and why share count rather than weight is the cleaner trading signal — is documented in the Methodology.
Which positions did Madison Avenue Partners, LP initiate in Q1 2026?
Madison Avenue Partners, LP established 7 new positions in Q1 2026: COUPANG INC (CPNG, 7.69%), ICON PLC (ICLR) (ICLR, 6.17%), APARTMENT INVT & MGMT CO (AIV, 2.19%), STAAR SURGICAL CO (STAA, 1.99%), PRIMO BRANDS CORPORATION (PRMB, 1.08%), DNOW INC (DNOW, 0.71%), PAR TECHNOLOGY CORP (PAR, 0.26%).
Which existing positions saw the largest allocation increases for Madison Avenue Partners, LP in Q1 2026?
The largest portfolio-weight increases in existing positions were: MAGNUM ICE CREAM CO NV (MICC, +3.06% weight, +78.02% shares), SINCLAIR INC (SBGI, +0.23% weight, +61.98% shares), GALAPAGOS NV (GLPG, +0.11% weight, +11.39% shares).
Which positions did Madison Avenue Partners, LP fully exit in Q1 2026?
Madison Avenue Partners, LP fully exited 3 positions in Q1 2026: SOLSTICE ADVANCED MATLS INC (SOLS, last-reported weight 5.81%), UNIFIRST CORP (UNF, last-reported weight 2.52%), WORKIVA INC (WK, last-reported weight 0.22%).
Which existing positions saw the largest allocation reductions for Madison Avenue Partners, LP in Q1 2026?
The largest portfolio-weight reductions in positions kept open were: GLOBUS MEDICAL INC (GMED, -7.16% weight, -72.66% shares), SANDISK CORP/DE (SNDK, 2.48% weight, -56.84% shares), CENTRAL BANCOMPANY (CBC, -0.57% weight, -55.23% shares), FRANKLIN STR PPTYS CORP (FSP, -0.06% weight, -52.07% shares), WILEY JOHN & SONS INC (WLY, -0.39% weight, -40.87% shares), INDIVIOR PHARMACEUTICALS INC (INDV, -3.96% weight, -31.29% shares), KEROS THERAPEUTICS INC (KROS, -0.42% weight, -23.93% shares), MAGNERA CORP (MAGN, -0.50% weight, -10.67% shares), BRITISH AMERN TOB PLC (BTI, -0.12% weight, -8.17% shares), SOLVENTUM CORP (SOLV, -1.44% weight, -5.65% shares).
Do quarter-over-quarter 13F allocation changes constitute explicit trading signals?
No. Quarter-over-quarter changes reflect a combination of active trading and market price movement. A weight increase can result from price appreciation alone, without the manager adding shares. Share-count delta is the cleaner indicator of explicit trading activity.